A reliable and trustworthy system of weights and measures is vital for economic activity.

The National Institute of Standards and Technology (NIST) has issued two publications calling for the amendment of labeling laws to allow the voluntary use of only metric units on some consumer products.

National Weights and Measures Week is Feb. 28 -- March 6 HARRISBURG, Pa., March 4 /PRNewswire-USNewswire/ -- Agriculture Secretary Russell C.